From 6dedd6a940194881c3b66124ff277c4cb14d08bd Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Thu, 26 Nov 2020 10:33:15 +0900
Subject: Fix `Symbol.all_symbols` to include preallocated symbols; ref #5116

---
 mrbgems/mruby-symbol-ext/src/symbol.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/mrbgems/mruby-symbol-ext/src/symbol.c b/mrbgems/mruby-symbol-ext/src/symbol.c
index d0ea52946..aa4264492 100644
--- a/mrbgems/mruby-symbol-ext/src/symbol.c
+++ b/mrbgems/mruby-symbol-ext/src/symbol.c
@@ -25,6 +25,9 @@ mrb_sym_all_symbols(mrb_state *mrb, mrb_value self)
   mrb_sym i, lim;
   mrb_value ary = mrb_ary_new_capa(mrb, mrb->symidx);
 
+  for (i=1; i<MRB_PRESYM_MAX; i++) {
+    mrb_ary_push(mrb, ary, mrb_symbol_value(i));
+  }
   for (i=1, lim=mrb->symidx+1; i<lim; i++) {
     mrb_ary_push(mrb, ary, mrb_symbol_value(i+MRB_PRESYM_MAX));
   }
-- 
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